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(NoModeL) I I Y R. A. SIMPSON.

AXLE GAGE.

Patifted Dec. 30, 1884.

ATTORNEYS.

\ tends.

ilniirnn STATES PATENT Orrien.

RUFUS ANDREW SIMPSON, OF FERNDALE, CALIFORNIA.

AXLE-GAG E.

SPECIFICATION forming part of Letters Patent No. 309,984, dated December30. 1884.

Application illvtl May28, 1884.

To all 1071,0722, it may concern.-

Be it known that I, Burris ANDREW Sine SON, of Ferndale, in the countyof Humboldt and State of California, have invented a new i and ImprovedAxle-Gage. of which the following is a full, clear, and exactdescription.

The object of my invention is to provide for wagon and carriagemanufacturers and repairers a gage for accurately measuring the set andgather of a wagon wheel, and for use in indicating accurately the exactset and gather for iron and steel axles.

My invention consists in the construction and combination of parts, aswill be hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a front elevation of my improvec axle-gage, with partsbroken out to bring it within the compass of the drawing. Fig. 2 is arear elevation. Fig. 3 is a longitudinal section. Fig. 4 is a transversesect-ion taken on line a: x in Fig. 1; and Fig. 5 shows the completegage, on a reduced scale, applied to a wagon-axle.

The body of the gage is formed of two bars, A B, connected together by apivot, a. A tapered arm, 0, which is a prolongation of the bar B,extends from the pivot a over the bar A, and is provided with a centrallongitudinal line, 7), extending from the pivot a to the end of arm, andrepresenting the face-line of the spoke of wheel. Transverseradius-lines c, crossing the face of spoke-line b at right angles andplaced an inch apart, represent the semi-diameter of the wheels whoseaxles are to be set by the gage. The transverse radius lines 0 arenumbered to correspond with the number of inches they are removed fromthe pivot a, the said pivot (0 representing the center of wheel. Aslide, D, on the bar A carries a loop, D, through which the arm G exThis loop is graduated on its outer A bow-spring,

surface into parts of an inch.

d, secured to the slide D, engages rounded projections e on the back ofthe bar A, and holds the slide D in any one of aseries of positionsvarying by one inch, and corresponding with the graduations on the arm0. The

(X0 model.)

bars A B are provided with universal clamps E E E, which consist of twocurved arms,f, pivoted together on abolt, and having their free endsbent away from the bars A B, and

parallel with each other, forming fingers f. The curved arms f areconnected by links h with bolts 13. The bolts 9 i are provided withwing-nuts for convenience in operation, and the said bolts gt of theclamp Eextend through a central longitudinal slot in the bar A, near itsfree end. In a similar manner the bolts r z of the clamp E extendthrough a central longitudinal slot in the bar B, and the bolt 5 of theclamp E extends through a hole in the bar B, while bolt 71 of the saidclamp passes through a central longitudinal slot in the bar.

In use the clamp E is drawn together by pushing the bolt 1; toward thepivotal bolt 9, so as to bring the fingers f against the armFof the axleG, near the collar of the axle, as shown in Figs. 3 and 5. The clamp Eis then adjusted to suit the length of the axle arm F, when the bolt 1is tightened. The armsf are then drawn together and fastened bytightening the bolt 1' In a similar manner the clamp E is brought intoengagement with the arnr F of the axle G. The slide D is now moved onthe bar A to bring the edge of the loop D opposite the transverse linerepresenting the radius of the wheel belonging to the axle to, be gaged.The axle is now heated, then bent in the usual way and the gage appliedto it, and then the axle is bent until the line b on the arm 0 isopposite the graduation on the loop D, representing the required set orgather. For the set the gage is applied to either the front or hind sideof the axle, and for the gather to either the top or bottom of the axle.

My improved gage is adapted to axles of all shapes and sizes, and isused without regard to the length or taper of the arms. The universalclamps move equally in both directions, and therefore bring the centrallongitudinal line, Z), and the central longitudinal slots of the gageover the center of the axle. The pivot a represents the center of wheel,(or hub,) and the tapered arm 0 represents the spoke, or two spokes laidface sides together, forming the line b, and serves to represent theface of the spoke for either right or left hand setting.

I am aware that axle gages have been provided with depending clamp-barsoperated by toggle-joints and set-screws working through slots in thegage-bars; also that the gage-bars have been pivoted together, with onebar ex has been secured to one barto guide the other bar; and I do notdesire to claim, broadly, such construction as of my invention.

Having thus described my invention, What I claim as new, and desire tosecure byLetters i Patent, is

1. In an axle-gage, the combination of the bars A B, pivoted at a, andprovided with adjustable clamps at the free ends of the bars,

the bar B being provided with a graduated 20 extension, 0, and the bar Ahaving project ions c, with the slide D, provided with a springcatch forengaging the projections e, substantial] y as set forth.

2. In an axle-gage of the character described. the combination of thebar A and the bar B, pivoted at a to said bar, and formed with theextension 0, said extension provided with a scale consisting of thelongitudinal line 1), extending from the pivot a to the free endthereof, and transverse graduations 0, with the slide D, embracing thebar A and extension 0, and provided with a graduated loop, D,substantially as set forth.

RUFUS ANDREW SIMPSON.

Vitnesses:

L. L. SIMPsoN, F. CUMMINGS.

